【发布时间】：2011-12-01 19:31:07
【问题描述】：
我有皮肤类，我在 contentGroup 中定义了一个组：
<s:Group id="contentGroup" left="0" right="0" top="0" bottom="0" minWidth="475" minHeight="0">
<s:layout>
<s:HorizontalLayout paddingLeft="0" paddingRight="0" paddingTop="0" paddingBottom="0" gap="2" />
</s:layout>
<s:Group id="group_nav_custom_comp_hgroup_prevnext" left="0" right="0" top="0" bottom="0" minWidth="100" minHeight="0">
<s:layout>
<s:HorizontalLayout paddingLeft="0" paddingRight="0" paddingTop="0" paddingBottom="0" gap="5" />
</s:layout>
<s:Button label="Test Button"/>
</s:Group>
</s:Group>
现在，在扩展上述皮肤类的 CustomComponent 中，我尝试访问“group_nav_custom_comp_hgroup_prevnext”（这是 contentGroup 中的子组），以便在运行时向其添加元素：
public class GroupNavCustomContainer extends SkinnableContainer
{
private var m_group_prev_next:Group = null;
private var m_bAdded_btns:Boolean = true;
private var _prevbtn:UIComponent = null;
public function GroupNavCustomContainer()
{
super();
setStyle("skinClass", GroupNavCustomSkin);
}
//----------------------------------
public function set prevBtn(ui_comp_prev:UIComponent):void
{
if(m_group_prev_next)
{
_prevbtn = ui_comp_prev;
m_bAdded_btns = true;
invalidateProperties();
}
}
//-------------------------------------------------------------------------
override protected function partAdded(partName:String, instance:Object):void
{
trace("In partAdded");
if(partName == "contentGroup")
{
var group:Group = instance as Group;
var visualElem:IVisualElement = group.getElementAt(0);
m_group_prev_next = visualElem as Group;
}
super.partAdded(partName, instance);
}
//------------------------------------------------------------------------
override protected function commitProperties():void
{
super.commitProperties();
if (m_bAdded_btns)
{
m_bAdded_btns = false;
m_group_prev_next.addElement(_prevbtn);
}
}
}
结果是我的：group_nav_custom_comp_hgroup_prevnext 根本没有出现，这可以从编译时出现在其中的按钮不可见的事实证明。有谁知道如何让它出现？ - 谢谢！ -迈克
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好的，我将我的子组添加为皮肤部分：
[SkinPart(required="true")] public var group_nav_custom_comp_hgroup_prevnext:Group;
所以现在我可以从 CustomComponent 的任何地方访问它。但是“group_nav_custom_comp_hgroup_prevnext”中的按钮仍然没有出现。有人知道为什么吗？
package com.viiv.digi.views.navigation
{
import mx.core.IVisualElement;
import mx.core.UIComponent;
import skins.GroupNavCustomSkin;
import spark.components.Group;
import spark.components.SkinnableContainer;
public class GroupNavCustomContainer extends SkinnableContainer
{
private var m_group_prev_next:Group = null;
private var m_bAdded_btns:Boolean = false;
private var _prevbtn:UIComponent = null;
[SkinPart(required="true")]
public var group_nav_custom_comp_hgroup_prevnext:Group;
public function GroupNavCustomContainer()
{
super();
setStyle("skinClass", GroupNavCustomSkin);
}
//----------------------------------
public function set prevBtn(ui_comp_prev:UIComponent):void
{
_prevbtn = ui_comp_prev;
m_bAdded_btns = true;
invalidateProperties();
}
//------------------------------------
public function get prevBtn():UIComponent
{
return _prevbtn;
}
//-------------------------------------------------------------------- -----
override protected function partAdded(partName:String, instance:Object):void
{
trace("In partAdded");
super.partAdded(partName, instance);
}
//-------------------------------------------------------------------- ----
override protected function commitProperties():void
{
super.commitProperties();
if (m_bAdded_btns)
{
m_bAdded_btns = false;
group_nav_custom_comp_hgroup_prevnext.addElement(_prevbtn);
}
}
}
}
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标签： actionscript-3 apache-flex flex4.5 skin